Examine source code of Shadow Scribe

{
  "manifest_version": 2,
  "name": "Shadow Scribe",
  "version": "1.0.0",
  "description": "Apply dark mode styling to Proton Docs documents for comfortable reading and editing in low-light environments",
  "permissions": [
    "storage",
    "activeTab",
    "*://drive.proton.me/*",
    "*://docs.proton.me/*",
    "*://docs-editor.proton.me/*",
    "*://account.proton.me/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{8931a4c3-d2b5-4cdd-a453-53fb72b9bdab}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://drive.proton.me/*/docs/*",
        "*://docs.proton.me/doc*",
        "*://docs-editor.proton.me/*"
      ],
      "js": [
        "utils/storage.js",
        "utils/messaging.js",
        "content/content.js"
      ],
      "css": [
        "content/dark-mode.css"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "content/dark-mode.css"
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}